Registering and locking apparatus for transfer presses



Oct. 19, 1943. G. E. DIEVERS REGISTERING AND LOCKING APPARATUS FOR TRANSFER PRESSES Filed May 23, 1941 5 Sheets-Sheet l INVENTOR H V H Oct. 19, 1943. G. E. DIEVERS 2,332,135

REGISTERING AND LOCKING APPARATUS FOR TRANSFER PRESSES Filed May 23, 1941 5 Sheets-Sheet 2 I 3 L INVENTOR F1 3 4 GROVER E DIEVERS Oct. 19, 1943. v Rs 2,332,135

REGISTERING AND LOCKING APPARATUS FOR TRANSFER PRESSES Filed May 23, 1941 V 5 Sheets-Sheet 5 INVENTOR GROVEF? E. DIEVERS 1943. e. E. DIEVERS 2,332,135

REGISTERING AND LOCKING APPARATUS FOR TRANSFER PRESSES Filed May 25, 1941 5 Sheets-Sheet 4 V A f (2 25 INVENTOR EROVEIQ E. DIE VERS Oct. 19, 1943. DIEVERs 2,332,135

REGISTERING AND LOCKING APPARATUS FOR TRANSFER PRESSES Filed May 23, 1941 5 Sheets-Sheet 5 INVENTOR GRDVER E. DIEVERS Paterited Oct. 19, 1943 a 3 3 1 REGISTERINGIAND LOCKINGABPABATUS FOKTRANSFEEPRESSES "The kaldwin;hoeomoiiive'worksya corporation oft-Pennsylvania w j l v V "s'oiaimst (Cl. 1 13'- 38)"-= Thisinventionrelates generally to .nresses of v 2jis a n enlargedelef vation o igthegregis r a type emnloying, transfer plates; and more paring and locking mechanisrnshown inits position ticula'rly to improved apparatus for. registering for'rnoving one ofthe transfer platesintoitsregs and. looking atransfer plate in its proper position istered-relation r r I l ;v in the,.press..- 5 Fig.- 3 -is,;asectiOnalviewshowing my improved Transier plates'are employed, for certain tynes meansin its: locked position after having moved of di andst'ax'nping'work where itisdesirableito, the transfenplateto its normally eligned posh have. twosets .oil olies, one of. which is within tion is the press while the otheris outside thereof.; 1 The i 4; is a transyers se i n taken On 3 m workmen may therebyremove a punched or i 44 of-Figs.,3;anti 5 r. I stamped. sheet, metal plate from. the displaced I Fig. 5 isaeviewysimilartoMg -3, butshowing dies and place another pieceeofblanksheet nietal the, relation of the transfer plate and press platen thereon preparatory t movingvthe same into and-other elementse-when-the registering-V and pressing position withinthe 'presswhen this I locking mechanismisvin-its lockecl position;

' pistes. transferred intothepresslthetothenplate File -Elvis a'planview of the: operating linksof transfer plates to be iresp'eetively moved into teringandjloeking mechanism;v

withitsstamped or pressed articles be simul they gisteringahdloekingmeansj n 1 taneousljtrans'ferred.outof thelpress; its articles T t-is vaitr ansverse section taken substan-i removed'andthenreloadedpreparatoryto repeat? tially onathe line/"1+1 of Fig. 5; r a

ing the foregoing. operation in the Opp Q'Site, direCr Figngg Lissa transverse section taken substa-r tion. Q This, modeeof operation is well-knownbut tiallygon thelineB-J of Fig.5;

difficulties have sometimes beenencountereci. in v Fig; 9--is a longitudinal vertiealsection-taken lining upwith:reasonableaccuracthe transfer substantiall qn ethe liner-9+9 of Fig. 6; and platesv relative tothe upper dies'or pressing e1e-. Fig. IOHishorizontalseetionttaken substan ments. This problem.is particularly fdiifieult in tially onthelinell-Aflof Fig.5.; l e presses becauseof the relatively largeweight entire-particularembodimentof the-invention of; the shiftahlepartSandlthefact that they disc-losedrhere-iniorli p p lsfl-flfill t ar being shuttled into and. out. of the press as one specific formpiih invent ion l havegshown frequentlyes possible. a .v V.

I It is an; objectlof my: invention to provide an improved registering means whereby the transfer h plates-may be-positively, and expeditiously: posiupper diesliqe ger plate inotJshow-n); for'earrytioned. Within the; presswitna reasonably. high ing an QDpeE-haI-f o f-.- ie whose lowerl half- -is clegree of accuracy: Another-object"isft pro-ride normally positioned -ahove; the bolster: Thegbo'l! improved.registering-mechanism in combination ,ster l is suitably; mounted-as by bolts zupon a which may be of any, suitable or usu al typelcom in=Fig.-1 a lower-platenor--bolster I of a press withflmproyted meanssior locking th transfer base 3v which, if desired,maylf r i m f;. t he plates their registered position. Astill. turpressstriictnre. u ,Laterally locatediloigbolsterJ ther objectis to provide an improved; mechanism to each, side thereof is a pair of. roller tables for positioninganct lockin thetransfer plates 4 and 5, arranged so that-tableil isv adapted within the-a press in a simple, direct and quick support a transfer platefi at th e timel when a acting manner andt dothis-wither structurethat second transfer plate 1 is resting ion bolster-l hasruggednesscombinecLwithlaocuraoy. v and sii nilarly,-=when plate 'Lis resting on tablej j I A further objeetistolproviqe an improved regthen/plate 6 1$ supported onloolster I. To transistering means-that isr operative on either side fer the plate 'ifrom bolsten ltotable 5 and simule of h pr at i enfi all g a Pain-p a is I H to the bolster]. or ,wiceHi/ersa during: revei'segopere taneously transierthe l plate 6 from .ta blel A on aligning osition-irony opposite sidesof the press ation, ea'ohlplatefis provided,'Fig.- 8,"withia pair of r I platen, amiss, conneotedto a pair; of chains Bthroughga e Other ohjeqts and advantages Will besmore I chainiattachment, .l3=pivotally ,connectedat fl t apparent to thoseaskillegiginthe artwfrom vthe to arms 91 'Ihe arms and=jchainspass through following;descriptionofgtheaepoznpanying draw 5 longitnqinall-vertical slots; l2 formed in the-1201+ inns in-which:

,Fig. 1 is a fragmentaryside elevetion ofwthe lation ,to each other and,arjconnee cl stationary platen of a press in combinatiomwith together3931rigid" oii'niiectin links 15.: Flfhe fo going'pl'ate mi dhain conneoting arrangement is' the transfer mechanism; and m improved-,reg is- The two plates are maintained iinla-iixecl hand and the other is left hand, as shown in Fig. I, and hence the same reference numbers for one connection are also used for the other. Chain 8, as is usual in transfer mechanism of this type,

. passes around a. series of sprockets I6, one of which'is suitably reversibly driven by power through a chain and sprocket ..I I from-any suit-- able source. By driving chains 8 in one direction say in a clockwise direction, plate I will be moved off of bolster I on to table and plate 6 will be moved from table 4 on to the bolster and conversely when the chain is driven in a counter clockwise direction. I

The transfer mechanism above described cannot be stopped with sufllclent precision to assure-'- stationary guideways 2.0 and 2I central1y bolted at2la, Fig '8, to the ends of the bolster for slid ably supporting, Figs. 8 and 9, a carriage 22 .which has lateral guide flanges 23 and 24. As shown in Fig.9, a pair of :pivotally connected links 25 and 26 are'respectively pivotally connected as at 21 to slide '22 andat 28 to a link 29 which in turn is pivotally connected at 30 to an enlarged head 3| of a reciprocating rod 32; This rod slidably extends through a boss 33 which is formed as an integral part of slide 22. As shown in Figs. 1 and 5, rod 32 is 'pivotally connected by alink' 34 to a bell crank arm 35 which is; oscillated by a suitable fluid actuated piston and cylinder 36 suitably controlled in any desired manner by a valve not shown. The bell crank 35 is suitably plvotally supported on a stationary bracket 31. The link 25 has a shoulder 38 adapted to engage, Figs. 9 andlO, a T head 4|! formed on an arm 4|, Fig. 5, secured to anddepending centrally from plate 6 or I. When' plate I, Fig.1, moves to the left, arm 4|, Figs lf8 and 10. moves into a longitudinal vertical slot 42 in bolster'l until the T head 40 of arm 4| engagesa pair of rearwardly projecting stationary bosses 44 and 45 formed on the fixed bolster on opposite sides of slot 42. e The locking mechanism for the above linkage comprises. as shown in Figs: 24, a pair of rollers 45 and 41;!ournalled upon the pivot pin' 28. These rollers ride 'on the lower surface of 'the stationary guideways and 2| until the carriage 22,h as moved inwardly a predetermined distance whereupon rollers .45 and 41 move down into arcuate recesses 48 formedin the lower surfaces ing mechanism is duplicated at each end of bolster I thereby permitting plate I to be registered and locked from the right side, Fig. 1, and permitting plate 6 to be registered and locked from the left side of the bolster I. Inasmuch as the two registering and locking mechanisms are identical, except that one works toward the left and thepther toward the right it is not deemed necessary to describe the second registering and locking device and hence the same reference nui morals for corresponding parts of the two devices 1 Operation Assuming that plate I is on table 5, Fig. 1, the operator applies power to sprocket II to cause chain 8 to pull plate I from table 5 to the left as through the chain connections I3, I4 and I5. During this times'ervo-motor 36 is in its lower position and links 25 and 26, Fig. 9, are substantially in alignment with each other and carriage 22 is locatedat its rearmost position within guideways 20 and 2|. However, when plate I is approximately positioned on bolster I then fluid is admitted to servo-motor 36 thereby rotating crank arm in a counterclockwise direction and accordingly moving rod 32 through the now temporary stationary boss 33 soas to swing arms 25 and 26 upwardly until shoulder 38 engages T head of the plate bracket 4|. Application of fluidor air pressure in the servo-motor is continued thereby moving plate I and its bracket 4| to the left, the carriage 22 and the entire linkage and rod structure supported thereon move as a unit with plate I. After the plate has been moved to its predetermined position rollers 46 and'4l,'Figs. 3 and 4, drop into the arcuate recess es 48 thereby positively locking the transfer plate I against movement to the right, it being understood that the T head 40 positively engages stationary bosses 44 and Fig. 10, of bolster I at the time when the locking rollersare in their of the stationary guideways 20 and 2|. The I arcuate recesses: are positioned so that the rollers enter the same just after the T head 40 engages bosses: 44 and 45; After, the transfer plate 6 or I is'accuratelyregistered, the link 26 and rollers and 41 link 23, crosshead 3| and rod .32 continue, to move forward under the action ofcylinder fiffuntil'rollers 46 and". are both fully seat ed in thefbottom of recesses 48. Guide-- ways 20 and 2| and linklfi are 'so related to link 25 that any force applied to .transferplate I, tending to move the plate out of its registered position, jwilljcause arm 26, Fig. '9, to tend'to move its rollers 46. and" further into .thearcuate recesses thereby producing a self-locking ac tionlwhich firmly holds the transfer plate.

' Theheretofore described registering and lockrecesses. Hence the transfer plate is prevented from moving in either direction. During the foregoing operation the left hand registering and locking mechanism, Fig. 1, has been moved to its inoperative straightened position as shown and plate 6 has been transferred from bolster I to roller table 4 whereupon the operatormay remove such articles as have been punched or pressed and may place another piece of sheet metal over the diesof plate 6 while the press is performing an operation on the sheet metal now resting on the dies of plate I. To unlock the registering mechanism the servo-motor 36 is moved downwardly thereby first moving the locking rollers 46 and 41 out of their arcuate recesses and then when the links 25 and 26 are straightened so as to'be in substantial alignment with each other they will pull the carriage 22 rearwardly through either pin 21 or by engagement of head 3| with boss 33. The operator now applies reverse power to sprocket II to transfer plate I to table 5 and plate 6 to bolster I whereupon the left hand reg-.

istering and locking mechanism is actuated to act on the left end of plate 6 in the same mandisengage said toggle links from said plate to starts to move forward and vice versa on the reverse stroke.

From the foregoing disclosure it will be seen that I am able with great dispatch to register and lock a transfer plate in position with a high degree of accuracy and positiveness and do so with a structure that is relatively simple and economical in co-nstructiomoperation and maintenance and that is sturdy and compact.

,It will of course be understood that various changes in details of construction and arrangement of parts may be made by those skilled in the art without departing from the spirit of the invention as set forth in the appended claims.

I claim:

l. The combination in a press having a bolster and tables at each end thereof for alternately supporting transfer plates one of which is supported on said bolster while the other is on one of said tables comprising, means for transferring one or the other of said plates from their respective table to an approximate position on said bolster and vice versa, mechanism "at one end of said bolster for moving one of said plates into a predetermined registered position'en said bolster after being approximately positioned thereon, mechanism located at the other end of said bolster for moving the other of said plates into moved transversely on to or off of said bolster.

comprising, a transversely movable registeringmechanism for transversely moving said plate into a predetermined registered position on said bolster, and said registering mechanism having moved on to or off of said bolster comprising, a'

registering mechanism for moving said plate into a predetermined registered position on said bolster, said mechanism including toggle links and means for. moving the links into a nonaligned relation for engaging and moving said plate" structure into a predetermined position on the bolsterda carriage, means; for supporting said toggle mechanismon said carriage so thatthe carriage and toggle mechanism is movable as a unit during positioning of a transfer plate structure on the bolster, and means for locking said transfer plate structure in its predetermined positionon the bolster automatically when said carriage has moved a predeterminedfdistance during the positioning operation. I e l a 7. The combination in a press having a bolster and a transfer plate movable on to or off of said bolster comprising, a positive stop on saidbolster,

an element on said plate for engaging said stop, t means for moving said plate on to said bolster.

until said element engagessaid stop, said means being adapted to have continued movement after said stop is engaged, and mechanism actuated'by said means during said continued movement thereby to automatically lock said plate inposi tio-n when said stop is engaged;

means movable into and out of the path of movement of a portion of said plate structure for engaging the same to effect said predetermined transverse positioning thereof and for disengaging the same to allow transfer of the plate structure off of the bolster.

-3. The combination in a press having a bolster and a transfer plate structure adapted to be moved on to or off of said bolster comprising, a

registering mechanism for moving said plate into registering mechanism for moving said plate into a predetermined registered position on said bolster including toggle links and means for moving the links into a non-aligned relation for engaging and moving said plate structure into a predetermined position on the bolster, and means whereby said toggle links are movable into a substantially aligned relation'to each other to 8. The combination in a press having a bolster and a transfer plate movable on to'or ofi of said bolster comprising, a positive'stop' on said bolster, an element on said plate for engaging said v stop, means for moving said plate on to said bolster until said element engages said stop, and

means actuated by said latter means for auto-,

matically locking said plate in position when said stop is engaged, said means for moving said plates on to said bolster including toggle links and a re.-

ciprocatory member connected thereto, movement of said reciprocatory member in onedirection causing said links-to move laterally into a disaligned position so as to engage said plate structure to effect a predetermined position: thereof on the bolster and said reciprocatory. member being movable in the opposite direction for moving said toggle links in substantial alignment'with each other so as to disengage said plate structure and allow the same to be removed from the and adapted upon a predetermined movement of said carriage to move laterally with one of said toggle links into said recess thereby to lock the transfer plate in position.

GROVER E. DIEVERS. 

